Methods and systems for partial personalization during application update

A communication device comprising:

• a processor;
• and
• a computer-readable medium coupled to the processor, the computer-readable medium comprising code, executable by the processor, to perform operations for updating personalization information on the communication device, the operations including:
• after installing an update of an application on the communication device:
• sending, to a server computer, a migration notification including device identification information, applet identification information identifying an applet of the application, application version information associated with a prior version of the application, and updated application version information associated with the update of the application;
• receiving partial personalization information for an account associated with the applet of the application for installation on the communication device to update the applet identified by the applet identification information, wherein the partial personalization information is received in response to the server computer identifying the account associated with the migration notification using the device identification information and the applet identification information, validating the migration notification by comparing the received application version information with stored application version information associated with the identified account, and
• determining the partial personalization information as a difference between a personalization profile for the account associated with the applet of the application corresponding to the application version information and an updated personalization profile for the account associated with the applet of the application corresponding to the updated application version information;
• and
• installing the partial personalization information onto the applet using a script.